<div class="comment-body">
  <div class="user-img">
    <img alt="user" class="img-circle" src="/static/img/default.png">
  </div>
  <div class="mail-contnet">
    <h5>{{ com.user.username }}</h5>
    <span class="mail-desc">{{ com.content | safe }}</span>
    <span class="time pull-right">{{ com.create_time }}</span>
  </div>
</div>